zuibun

Privacy Policy for Zuibun.com

Effective date: October 22, 2025

Zuibun.com (“we”, “our”, or “us”) values your privacy. This Privacy Policy explains how we collect, use, and protect your personal information when you use our app and services, including the spaced repetition system, study tracking, and subscription features.

1. Information We Collect

We may collect the following information from you:

  • Personal Information: Name, email address, billing information. Payment details are handled securely by our payment partners.
  • Usage Information: App activity and study progress (cards studied, reviews completed, streaks), device info (device type, OS, IP, browser), and audio/voice interactions if using TTS features.
  • Cookies and Analytics: Cookies and similar technologies for analytics, performance, and functional purposes. Tools like Google Analytics or Plausible may receive anonymized usage data.

2. How We Use Your Information

  • Provide and maintain the FSRS learning experience, including spaced repetition scheduling.
  • Process subscription payments via payment providers.
  • Communicate updates, account info, support responses, or marketing (if opted in).
  • Improve and optimize the app based on anonymized usage data.
  • Enable features like TTS/audio playback and progress tracking.

3. Sharing Your Information

We do not sell your personal information. Data may be shared only in the following circumstances:

  • Payment Processing: external payment providers handle your billing information.
  • Analytics Providers: May receive anonymized usage data to help improve the service.
  • Legal Compliance: If required by law or to protect rights, property, or safety.

4. Your Rights

You have the right to:

  • Access, correct, or delete your personal information.
  • Opt-out of marketing emails or tracking technologies.
  • Contact us to request a copy of your data or inquire about data usage.

To exercise your rights, email us at [email protected].

5. Security

We implement reasonable administrative, technical, and physical safeguards to protect your personal data, including encrypted storage and secure connections.

6. Children’s Privacy

Our app is not directed to children under 13. We do not knowingly collect personal information from children.

7. Updates to This Policy

We may update this Privacy Policy from time to time. Changes take effect immediately upon posting. We encourage you to review this policy periodically.

8. Contact Us

For questions about this Privacy Policy, data requests, or other privacy concerns, contact us at:
Email: [email protected]
Website: https://zuibun.com